BlueMailCentral is a service that sends user mail digitally to be printed and posted as near as possible to its destination. With the Postal API users can upload their, or their customers, documents...

Docmail itself is a web based physical mail service. Users transmit an electronic document and mailing list to Docmail, where it is printed and mailed as a real post. The Docmail API lets developers...

Lob Simple Check Service API is a fee based cloud API that automates check payments for businesses and developers. This API is scalable and customizable, allowing businesses to add branding logos and...

Print For Less is a printing company that offers the ability to send professional-looking mailers to 500 customers, printed full-color on both sides, quickly produce 2,000 product or sell sheets for...

Stampr is a free letter mailing web service. Users simply submit a letter of five pages or less, and Stampr will print, fold, insert into an envelope, and send. Stampr prints in full color and works...

Atomic Mass Email Service is a email marketing and mass emailing service. Atomic Mass Email Service provides features for mass emailing and email campaigns such as newsletter creation and subscriber...

MailWriter is a cloud mailing service allowing users to create and send single letters, complete mailings, or personalized postcards. The MailWriter API allows third-party applications to create and...

Stamps.com is an online postage vendor that also provides a SOAP-based API for generating USPS shipping labels. Users can make and print labels themselves or e-mail labels to customers for printing....

The SSW Australian Postcode API is a public web service that provides a quick and centralized method of checking that suburb name and postcode details are correct for addresses located in Australia....

From their site: Yahoo! Travel is also launching API access to trip planner data through a REST-like interface. With the Yahoo! Travel Trip Plan APIs you can search for trip plans by Yahoo! ID or by...

AirBNB is a vacation rental and room rental service that allows users to rent out their houses or rooms to travellers and travellers can search for accommodations by location to find a place to rent...

9flats is a service for those who want to book a place or rent out a room, apartment or house, across the world. Users can rent out single rooms or entire locations for a single night or an extended...

Hotelsbase is the world largest hotel database, of over 500,000 hotels. It lists hotels and their room prices all over the world. Information within the database includes facility information, map co...

The service provides search and reservation booking for travel accommodations. It offers access to hotel room reservations, but also condos, villas, and apartments for short-term rental, depending on...

Roomorama is a service for travellers to find short-term accommodations in locations around the world. Property owners can list their properties/rooms for short-term rental that travellers can search...

Amadeus is the leading provider of IT solutions and transaction processor to the travel and tourism industry. Amadeus provides processing services including search, pricing, booking and ticketing in...

mTrip develops mobile solutions for the travel industry. The mTrip API can be used by tour operators, travel agencies, and their partners to sync client-side data systems with the mTrip platform. The...

Trekksoft is an online platform for ticket, tour, and travel bookings and payments. Trekksoft offers a variety of online solutions for travel providers.
The Trekksoft API allows developers to access...